Hollow tube forming technology

A forming process and hollow tube technology, applied in metal rolling and other directions, can solve the problem of high defective rate of hollow balls, achieve fast coating operation and reduce defective rate

Active Publication Date: 2020-06-05
深圳市鸿亨珠宝首饰有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology allows for better quality tubes produced from an empty tube during production than traditional methods like laser cutting or soldering. It also makes sure no unwanted areas are left on the inside surface when producing these types of pipelines due to lack of uniformity overall. Additionally, this method helps reduce defects caused by excess metals remaining after machining processes.

Problems solved by technology

The technical problem addressed in this patented text relating to current methods used for making hollow ball bearings involves creation of closed-ended circular holes within the inner surface of the spherical shell made from materials such as gold or silver. These techniques involve rolling sheets onto a tape before being pressed down tightly, resulting in imperfections caused by cracks formed when pressure was applied over them.

Method used

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Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment one: a kind of coating device for coating lubricating liquid, refer to the attached figure 1 And attached figure 2 , including a cylinder 1 with a hollow interior, a coating sleeve 2 sleeved outside the housing 1 , an absorbing sleeve 3 inside the housing 1 , and a drawstring 5 fixedly connected to one end of the housing 1 . The outer side of the housing tube 1 is provided with a number of relief holes 12 evenly distributed around the axis of the housing cylinder 1, and a connection block 4 is arranged in the relief hole 12, and the side of the connection block 4 close to the absorption sleeve 3 is fixedly connected with the absorption sleeve 3, The side of the connection block 4 close to the coating sleeve 2 is fixedly connected with the coating sleeve 2 . The coating sleeve 2, the connecting block 4 and the absorption sleeve 3 are all made of sponge material, and the outer diameter of the coating sleeve 2 is slightly larger than the inner diameter of the ...

Embodiment 2

[0038] Embodiment two: a hollow tube molding process, comprising the following steps:

[0039] a. Raw material melting: select raw materials with a gold content greater than or equal to 99.99%, and heat the raw materials to 1150°C to make the raw materials into a molten state;

[0040] b. Pouring cylindrical billet: inject molten raw material into the casting mold for molding, after pouring is completed, cool the raw material to room temperature naturally, and then take out the formed cylindrical billet from the mold;

[0041] c. Billet heating: place the cylindrical billet in the heating furnace for heating, heat the cylindrical billet to 900°C, after heating to the specified temperature, keep the cylindrical billet in the heating furnace for 600s, after the heat preservation is completed, take the billet out of the heating furnace; During the heating process, a walking heating furnace is used for heating;

[0042]d. Piercing and rolling: After the billet is taken out of...

Embodiment 3

[0048] Embodiment three: a hollow tube molding process, comprising the following steps:

[0049] a. Raw material melting: select raw materials with a gold content greater than or equal to 99.99%, and heat the raw materials to 1175°C to make the raw materials into a molten state;

[0050] b. Pouring cylindrical billet: inject molten raw material into the casting mold for molding, after pouring is completed, cool the raw material to room temperature naturally, and then take out the formed cylindrical billet from the mold;

[0051] c. Billet heating: place the cylindrical billet in the heating furnace for heating, heat the cylindrical billet to 925°C, after heating to the specified temperature, keep the cylindrical billet in the heating furnace for 800s, after the heat preservation is completed, take the billet out of the heating furnace; During the heating process, a walking heating furnace is used for heating;

[0052] d. Piercing and rolling: After the billet is taken out...

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Abstract

The invention discloses a hollow tube forming technology, and relates to the technical field of accessory ball machining. The problem that in the prior art, the defective rate of hollow balls is highis solved. According to the technical scheme, the hollow tube forming technology is characterized by comprising the following steps of 1 melting raw materials, 2 pouring a cylindrical blank, 2 heatingthe blank, 4 performing perforating rolling, 5 performing annealing after rolling, 6 smearing a lubricant, 7 performing stretching rolling, 8 performing cleaning drying and 9 annealing a tube. Due tothe mode of performing stretching rolling after perforating is performed, no welding position exists at a prepared hollow tube made of a golden material. Accordingly, the metal materials are easy tocontrol in the extension direction during compression, and therefore the defective rate of machined hollow cylinders is lowered.

Description

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Claims

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Application Information

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Owner 深圳市鸿亨珠宝首饰有限公司
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